Data mining or user-submitted geographic location data:.Starting from 20 allows assignees to specify location of any IP subnetwork they own. The registries allow assignees to specify country and geographical coordinates of each assigned block. RIPE Network Coordination Centre (RIPE NCC).Latin American and Caribbean Internet Address Registry (LACNIC). Asia-Pacific Network Information Centre (APNIC).American Registry for Internet Numbers (ARIN).African Network Information Centre (AfriNIC).The primary source for IP address data is the regional Internet registries which allocate and distribute IP addresses amongst organizations located in their respective service regions: Some commercial databases have augmented geolocation software with demographic data to enable demographic-type targeting using IP address data. An alternative to hosting and querying a database is to obtain the country code for a given IP address through a DNSBL-style lookup from a remote server. These databases typically contain IP address data which may be used in firewalls, ad servers, routing, mail systems, web sites, and other automated systems where a geolocation may be useful. There are a number of free and paid subscription geolocation databases, ranging from country level to state or city-including ZIP/ post code level-each with varying claims of accuracy (generally higher at the country level). The protocol specifies that each IP packet must have a header which contains, among other things, the IP address of the sender. computer, printer) participating in a computer network that uses the Internet Protocol for communication. An IP address is assigned to each device (e.g.
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